Overview
The Texas Instruments LP2985AIM5-2.5/NOPB is a high-performance, low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 2.5V. This regulator is part of the LP2985 series, known for its low noise, high accuracy, and ultra-low dropout characteristics. It is particularly suited for applications requiring a reliable and efficient voltage regulation, such as in low-voltage microcontrollers (MCUs) and processors. The device operates over a wide input voltage range from 2.5V to 16V and can supply up to 150mA of load current.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2985AIM5-2.5/NOPB |
| Package | SOT-23-5 |
| Output Voltage | 2.5V (Fixed) |
| Maximum Output Current | 150mA |
| Input Voltage Range | 2.5V to 16V |
| Line Regulation | 0.032 %/V |
| Output Accuracy | ±1% |
| Polarity | Positive |
| Quiescent Current | 71 µA (typ) at I_LOAD = 0 mA |
| Shutdown Current | 0.05 µA (typ) for legacy chip, 1.12 µA (typ) for new chip |
| Operating Temperature Range | -40°C to +125°C |
| Dimensions | 2.92 x 1.6 x 1.02mm |
Key Features
- Low Dropout Voltage: The LP2985AIM5-2.5/NOPB features a low dropout voltage, making it suitable for applications where minimal voltage loss is critical.
- Low Noise: The regulator has a low output noise of 30 µV RMS with a 10-nF bypass capacitor, ensuring stable and clean output voltage.
- High PSRR: It offers a high power supply rejection ratio (PSRR) of 70 dB at 1 kHz and 40 dB at 1 MHz, which helps in attenuating the switching frequency of upstream DC/DC converters.
- Output Current Limiting and Thermal Protection: The device includes internal current-limiting and thermal protection features to prevent overcurrent and overheating.
- Enable Function: The regulator has an enable function that allows it to be turned on or off, which is useful for power management in various applications.
- Stable with Ceramic Capacitors: It is stable with 2.2-µF ceramic capacitors, making it easy to integrate into various circuits.
Applications
- Low-Voltage Microcontrollers (MCUs) and Processors: The LP2985AIM5-2.5/NOPB is ideal for powering low-voltage MCUs and processors due to its high accuracy and low noise characteristics.
- Portable Electronics: Its low dropout voltage and high efficiency make it suitable for use in portable electronics such as smartphones, tablets, and laptops.
- Industrial Automation: The regulator can be used in industrial automation systems where reliable and stable voltage regulation is essential.
- Medical Devices: Its low noise and high accuracy features make it a good choice for medical devices that require precise voltage regulation.
Q & A
- What is the output voltage of the LP2985AIM5-2.5/NOPB?
The output voltage of the LP2985AIM5-2.5/NOPB is fixed at 2.5V.
- What is the maximum output current of the LP2985AIM5-2.5/NOPB?
The maximum output current is 150mA.
- What is the input voltage range of the LP2985AIM5-2.5/NOPB?
The input voltage range is from 2.5V to 16V.
- What is the quiescent current of the LP2985AIM5-2.5/NOPB?
The quiescent current is typically 71 µA at I_LOAD = 0 mA.
- Does the LP2985AIM5-2.5/NOPB have an enable function?
Yes, the regulator has an enable function that allows it to be turned on or off.
- What is the operating temperature range of the LP2985AIM5-2.5/NOPB?
The operating temperature range is from -40°C to +125°C.
- What type of package does the LP2985AIM5-2.5/NOPB come in?
The regulator comes in a 5-pin SOT-23 (DBV) package.
- Is the LP2985AIM5-2.5/NOPB stable with ceramic capacitors?
Yes, it is stable with 2.2-µF ceramic capacitors.
- What are the key protection features of the LP2985AIM5-2.5/NOPB?
The device includes output current limiting and thermal protection features.
- What is the typical shutdown current of the LP2985AIM5-2.5/NOPB?
The typical shutdown current is 0.05 µA for legacy chips and 1.12 µA for new chips.
